/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 *    AdditionalMeasureProducer.java
 *    Copyright (C) 2000 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.core;

import java.util.*;

/**
 * Interface to something that can produce measures other than those calculated
 * by evaluation modules.
 * 
 * @author Mark Hall (mhall@cs.waikato.ac.nz)
 * @version $Revision: 1.8 $
 */
public interface AdditionalMeasureProducer {

	/**
	 * Returns an enumeration of the measure names. Additional measures must
	 * follow the naming convention of starting with "measure", eg. double
	 * measureBlah()
	 * 
	 * @return an enumeration of the measure names
	 */
	Enumeration enumerateMeasures();

	/**
	 * Returns the value of the named measure
	 * 
	 * @param measureName
	 *            the name of the measure to query for its value
	 * @return the value of the named measure
	 * @exception IllegalArgumentException
	 *                if the named measure is not supported
	 */
	double getMeasure(String measureName);
}
